Reddit Subreddit Finder
Pricing
$25.00/month + usage
Reddit Subreddit Finder
Find subreddits for any niche or topic. Search multiple keywords — get every Reddit community ranked by subscribers, with weekly active users and activity % to separate engaged communities from ghost towns. Built for marketers, advertisers, and community managers.
Pricing
$25.00/month + usage
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0.0
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Developer
Mark West
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Bookmarked
2
Total users
1
Monthly active users
2 days ago
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Reddit Subreddit Finder — Discover Communities for Any Niche
Find every subreddit talking about your topic. Search multiple queries, get subscriber counts, active user numbers, and activity ratios — so you know which communities are worth targeting.
One run. Every relevant subreddit. Ranked by size, filtered for quality.
What It Does
Reddit has thousands of communities for every niche imaginable. Finding the right ones manually is tedious — Reddit's own search buries results and shows no useful metrics. This actor searches Reddit's subreddit API for your topics and returns structured data for every matching community: size, activity, description, and which of your queries found it.
Enter "AI tools", "productivity", "SaaS" and get back every subreddit that covers those topics — deduplicated, ranked by subscriber count, with an activity ratio showing you which communities are actually alive.
Key Features
- Multi-query search — enter multiple topics, each searched independently, results deduplicated across queries
- Activity ratio —
active users / subscribersas a percentage. Finds small-but-engaged communities that a raw subscriber sort would bury matchedQueriesfield — shows which of your search queries returned each subreddit (useful when a community covers multiple topics)- Subscriber filter — skip dead communities below a minimum threshold
- NSFW filter — exclude adult content by default
Output
One row per subreddit:
| Field | Description |
|---|---|
rank | Rank by subscriber count (1 = largest) |
name | Subreddit name (e.g. r/learnprogramming) |
title | Subreddit display title |
description | Short public description |
subscribers | Total subscriber count |
weeklyActiveUsers | Weekly active user count (from Reddit's community header) |
activityRatio | weeklyActiveUsers / subscribers × 100 — engagement % |
url | Full Reddit URL |
nsfw | Whether the community is marked adult |
lang | Community language |
createdAt | Subreddit creation date |
matchedQueries | Which of your search queries returned this subreddit |
Getting Started
- Enter your topics (e.g.
AI tools,project management,bootstrapped SaaS) - Set
minSubscribersto filter out dead communities (default: 1,000) - Run — results come back ranked by subscriber count with activity ratios
Use Cases
Community targeting for marketers
Find every subreddit where your audience already hangs out. Use activityRatio to prioritize engaged communities over large-but-dead ones. Export to a spreadsheet and plan your community strategy.
Reddit advertising Reddit ads target specific subreddits. Discover all communities relevant to your product before building your ad targeting list.
Content distribution
Find where to post your content for maximum reach. matchedQueries shows which communities cover multiple angles of your topic — those are your best bets.
Competitor research Search your competitor's brand name and product category to find where their users gather. Those subreddits are where your potential customers live.
Niche validation Searching for a new niche? Low subscriber counts mean limited audience. High activity ratios mean passionate communities. Use both to assess opportunity size.
Input Parameters
| Parameter | Default | Description |
|---|---|---|
queries | — | Search topics (required) |
maxResultsPerQuery | 25 | Max subreddits per query (max 100) |
minSubscribers | 1000 | Filter out communities smaller than this |
includeNSFW | false | Whether to include adult communities |
proxyConfiguration | Residential | Proxy settings |
Activity Ratio Explained
activityRatio = (weeklyActiveUsers / subscribers) × 100
A subreddit with 500,000 subscribers and 200 weekly active users has an activity ratio of 0.04% — effectively dead. One with 8,000 subscribers and 350 weekly active users has a ratio of 4.4% — a genuinely engaged community where your posts will actually be seen.
Use it to sort by engagement rather than raw size when you're looking for communities to participate in rather than just advertise to.
Related Actors
- Reddit Mentions Scraper — once you've found the right subreddits, search for specific keywords across Reddit
- Reddit Brand Monitor — monitor brand mentions across Reddit on a schedule
- Reddit Competitor Monitor — track what Reddit says about your competitors
Built for marketers, community managers, content strategists, and Reddit advertisers who need to find their audience fast.
